Go down for a season in San Francisco? (4)
I believe the answer is:
fall
I believe this is a triple definition!
'go' is the first definition.
(I know that fall is a more specific form of the action go)
'down' is the second definition.
(thesaurus)
'for a' is a link.
'season in san francisco?' is the third definition.
(US term for autumn)
(Other definitions for fall that I've seen before include "Autumn - trip" , "Tumble, drop" , "Autumn; plummet" , "Descend, drop" , "A season in Vermont?" .)